Can you redirect an XML request on the client-side?

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Say a website www.example.com has a script that allows you to press a button when www.example.com/ajax_number == "allow" and denies you when www.example.com/ajax_number == "deny".I want to be able to press that button all the time without going back and forth check to see whether I can press the button.www.example.com checks www.example.com/ajax_number through an XML request (I think google chrome said it was xmlhttprequest, specifically).Is is possible on the client-side to redirect the script to a modified version of the ajax_number.htm in my dropbox folder? I.e. I want to visit www.example.com and direct it to my modified ajax_number.htm which is always == "allow" - how do I go about this?Thanks!